12V battery replacement procedures, vehicle registration requirements, and high-voltage electrical system safety warnings for smart forfour.

Introduction page showing battery replacement, registration, and EV electrical shock hazard information.

View full-size image ↗

See all EV-specific figures for the Fortwo / Forfour (453), or browse the full figure library. Part numbers and callouts are community-sourced and cross-referenced against the manuals — confirm with your VIN before ordering.